Diagnostic Value of MRI 3D-merge Sequence in Triangular Fibrochondral Complex Injury
Objective To investigate the diagnostic value of the MRI three-dimensional-multiple-echo recalled gradient echo(3D-MERGE)sequence in the detection of triangular fibrochondral complex(TFCC)injury.Methods A retrospective case series analysis was performed in 76 patients with ulnar pain admitted in Sichuan Province Orthopedic Hospital from January 2021 to January 2022.There were 35 males and 41 females,aged 16-52 years(mean 39.6 years).The patients were examined with the wrist MRI 3D-MERGE sequence,and then received wrist arthroscopic detection or treatment.The TFCC injuries were classified as central injury and peripheral injury.Take the results of wrist arthroscopy as the gold standard,comparing the sensitivity and specificity of the MRI 3D-MERGE sequence in diagnosing TFCC injury.Results Wrist arthroscopy confirmed TFCC injuries in 60 patients,among which 16 patients were with central injury and 28 with periphral injury,16 cases of both central injury and periphral injury.TFCC injuries were diagnosed with 3D-MERGE MRI sequence in 70 patients,among which 13 patients were central injury and 35 cases were periphral injury,22 cases of both central injury and periphral injury.As for central injury,the sensitivity,specificity of the 3D-MERGE sequence were 0.93、0.89,respectively;However,for periphral injury,the sensitivity,specificity of the MRI 3D-MERGE sequence were 0.80、0.62,respectively.Conclusion The MRI 3D-merge sequence have high diagnostic value in the diagnosis of TFCC injury.However,in the diagnosis of peripheral injury,MRI 3D-Merge sequence showed lower specificity compared to central injury.Therefore,in clinical practice,patients with peripheral injury suggested by MRI should be carefully diagnosed in combination with clinical history and physical examination.
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